Is CVE-2023-38710 actively exploited?

No active exploitation of CVE-2023-38710 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-38710 be exploited remotely?

Yes. CVE-2023-38710 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-38710?

CVE-2023-38710 has a CVSS score of 6.5 (MEDIUM).

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MEDIUM

CVE-2023-38710

NVD-CWE-noinfoPublished: August 25, 2023· Updated: Jun 17, 2026

6.5

CVSS v3.1

Official Description

An issue was discovered in Libreswan before 4.12. When an IKEv2 Child SA REKEY packet contains an invalid IPsec protocol ID number of 0 or 1, an error notify INVALID_SPI is sent back. The notify payload's protocol ID is copied from the incoming packet, but the code that verifies outgoing packets fails an assertion that the protocol ID must be ESP (2) or AH(3) and causes the pluto daemon to crash and restart. NOTE: the earliest affected version is 3.20.

NVD Source

Technical Analysis

CVE-2023-38710 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 6.5.